class Test{}
public class HelloWorld {
	public static void main(String[] args) {
		boolean flg = true;//布尔类型 只有两个值  true   false
		boolean flg2 = false;
		System.out.println(flg2);
	}
	public static void main9(String[] args) {
		short s = 10;//2个字节 16 -2^16   2^16-1 Short
		System.out.println(s);
	}
	/**
	 * 1.不要直接赋值一个超过范围的数据
	 * 2.
	 * @param args [description]
	 */
	public static void main8(String[] args) {
		byte b = 127;//1个字节->Byte -128  -  127
		System.out.println(b+1);//整形打印
	}
public static void main7(String[] args) {
	char ch = 'g';//单引号的叫做字符  “字符串” 2个字节 -》整数 character
	char ch2 = '雷';
	char ch3 = 97;
	System.out.println(ch3);
}



	public static void main6(String[] args) {
	float f = 12.5f;//Float
	System.out.println(f);
}
	public static void main5(String[] args) {
		double num = 1.1;
		System.out.println(num*num);
		double a = 1;
		double b = 2;
		System.out.println(a/b);
	}
	public static void main4(String[] args) {
		double d = 12.5;
		System.out.println(d);
		System.out.println(Double.MAX_VALUE);
		System.out.println(Double.MIN_VALUE);
		//int a = 12.5;
	}
	public static void main3(String[] args) {
		long a = 10L;//8 * 8 = 64  -2^63  2^63-1

		System.out.println(a);
		System.out.println(Long.MAX_VALUE);
		System.out.println(Long.MIN_VALUE);
	}

	public static void main2(String[] args) {
		/*int a = 10;
		int a3 =100;
		int a4 = 999;
*/


		
	}

/**
 * 文档注释
 * @param args [description]
 */
public static void main1(String[] args) {
	
for (int i =0;i<args.length ;i++ ) {
	System.out.println(args[i]);
}
	//行注释


	/*System.out.print("hello1");块注释
	System.out.print(100);
	System.out.println("hello2");
	System.out.printf("%d\n",10);
	*/
}

}
